LitioLAB quick start guide

LitioLAB 1.0 works within AutoCAD and GStarCAD and ZwCAD as an add-on/pluggin program.

At the moment of the creation of this page it works in:

  • AutoCAD (up to) R2021; starting with R 200X (and Mechanical Desktop 200X); only Windows versions.
  • GStarCAD 2016 onwards. Only Windows versions. Recommended: Professional version.
  • ZwCAD 2018 onwards. Only Windows versions.


  • LitioLAB DOES NOT run in Academic, Lite, nor LT versions.
  • LitioLAB was not tested with GStarCAD Standard.
  • LitioLAB was not tested with earlier ZwCAD versions.
  • Please check LitioLAB 1.0 compatibility with your CAD system (feel free to run the TRIAL mode).

The program can be manually installed by placing ALL of the LitioLAB 1.0 files in the SUPPORT directory of AutoCAD/GStarCAD or ZwCAD.

    The following are typical SUPPORT folder locations (they may vary according to your operative System [windows] version and your CAD platform):
      C:\Program Files\Autodesk\AutoCAD 2021\Support\
      C:\Program Files\ZWSOFT\ZWCAD 2019\Support\
      C:\Program Files\Gstarsoft\GstarCAD2018\Support\
      C:\Program Files\Bricsys\BricsCAD V21 en_US\Support\

To run LitioLAB 1.0, you first need to load it into your current drawing session. For this type the following in your CAD's command prompt:

    (load "LITIOLAB")

Load LitioLAB in the current AutoCAD/GStarCAD or ZwCAD drawing session

Then, to run the program just type:


Run LitioLAB in the current AutoCAD/GStarCAD or ZwCAD drawing session

For more information check LitioLAB user manual and the following:

Visit our Frequently Asked Questions page.

Check our customer's testimonials.

You can also watch our quick overview and introductory tutorial video.

Warning: In some operating systems, to run LitioLAB 1.0 your user needs to have the permissions or privileges, to access, write or modify files in the folder where LitioLAB 1.0 files are located (e.g., the SUPPORT folder).
LitioLAB 1.0 modifies the LitioLAB.cfg file when you make LitioLAB 1.0 configuration [settings] changes. (LitioLAB 1.0 may need to create/modify other files in normal operation.)

To solve this problem, you need to be logged-in as an administrator, and/or, you need to get the necessary permissions or privileges: right click the folder, properties, security tab, give permissions. (If not, when making configuration [settings] changes, they will not have any effect, and LitioLAB 1.0 might crash).

You can also watch the following explanatory video.

Warning: AutoDESK app store users:
If you used the installer downloaded from the AutoDESK app store, the location of your LITIO2 files would be similar to the following one:
    C:\ProgramData\Autodesk\ApplicationPlugins\LITIOsi LITIO2 - 3D Sheet metal unfolding soft.bundle\Contents\
(Please, note that this location could be slightly different, depending on your operating system and language settings;
this location may be hidden;
I recommend you perform a search for the litio2.* files in your hard drive).

TRIAL version has the following limitations:

  • FORMULA input length is limited to 20 characters. Longer formulas will lead to the shape be drawn as virtual objects.
  • Using any of the Auxiliary parameters [formulas or constants: J1, J2, C1, C2]. Use of the auxiliary parameters will lead to the shape be drawn as virtual objects.
  • XLS import, will lead to the set of points be drawn as a virtual object(s).
  • Parabolas - 3 point pick. Parabolas with a 4th or 5th point picked (the point that define the parabola limits [that trim or extend the parabola]) will lead to the parabola be drawn as a virtual object.
  • Catenaries, when the end points are at an angle of more than 10°, will be drawn as a virtual object.
  • Saving resulting coordinates to CSV file not available.
  • These virtual objects are not part of the drawing, and will disappear after a ZOOM, REGEN, REDRAW, PAN, etc.

You can also watch this explanatory video.

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